Malicious PDF — malware analysis report

Static analysis result for SHA-256 27b2b7340bd38164…

MALICIOUS

PDF

61.3 KB Created: 2020-08-11 07:58:37 +03:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 4.8.7)
MD5: f63fcb5e25069de17c117657b0df43dc SHA-1: 6571bd690fe7fb62c4209f0666d6c24a86db5c8d SHA-256: 27b2b7340bd38164f295f3465eedaf46b704b8805e7651a02793bfb474c2bc34
128 Risk Score

Malware Insights

MITRE ATT&CK
T1566.002 Spearphishing Attachment T1059.001 PowerShell T1204.002 Malicious Link

The PDF contains a link farm and a malicious redirector pointing to 'ttraff.com'. The document body, though heavily obfuscated, contains text related to 'Ibps clerk notification 2020 pdf download' and the malicious URL, suggesting a lure for job seekers. The presence of numerous benign-looking Shopify links likely serves to obscure the malicious redirector. No scripts were extracted from this sample.

Heuristics 4

  • PDF links to known malicious redirector infrastructure critical PDF_MALICIOUS_REDIRECTOR_LINK
    PDF contains a clickable URI to redirector infrastructure used by a known malicious PDF SEO/adware delivery campaign. These documents typically rely on user interaction and redirect chains rather than a PDF parser vulnerability.
  • Small PDF contains mass external PDF link farm critical PDF_SEO_LINK_FARM
    Small PDF contains many clickable external PDF links, mostly clustered on one host. This matches generated SEO/link-farm PDF carriers used to route users into malicious or unwanted-software delivery chains, rather than a normal document citation pattern.
  • Visual download / call-to-action button lure low SE_DOWNLOAD_BUTTON
    Document contains a call-to-action phrase ('Click here to download', 'Download Now', etc.) — low-signal unless other findings point to a malicious workflow
  • Embedded URL info EMBEDDED_URL
    One or more URLs were extracted from the document. The URL itself is not a detection — see the per-URL labels for which channel (macro, JS, link annotation, document body, ...) reached each URL.
    URL https://ttraff.com/pify?keyword=ibps+clerk+notification+2020+pdf+download
    • http://files.joysartstudio.com/uploads/1/3/2/7/132740270/roletez-kipekizajidivuf-tediwixok-bibub.pdf
    • http://files.onsfbay.com/uploads/1/3/1/0/131070375/3215495.pdf
    • http://wixomibap.graceacton.com/uploads/1/3/1/4/131406390/fexibamidum-fezazunitov-zavonosezesotov.pdf
    • http://files.norwichmonument.com/uploads/1/3/1/4/131407558/lafuwes.pdf
    • http://kuvufixo.hanskombucha.com/uploads/1/3/1/3/131398140/1123748.pdf
    • https://cdn.shopify.com/s/files/1/0433/0654/9406/files/74974250598.pdf
    • https://cdn.shopify.com/s/files/1/0432/2823/3887/files/41534561219.pdf
    • https://cdn.shopify.com/s/files/1/0428/9835/8432/files/95509007145.pdf
    • https://cdn.shopify.com/s/files/1/0434/4945/0661/files/79191548440.pdf
    • https://cdn.shopify.com/s/files/1/0428/1755/2543/files/anonimo_veneziano_spartito_pianoforte.pdf
    • https://cdn.shopify.com/s/files/1/0427/8072/1311/files/matepeb.pdf
    • https://cdn.shopify.com/s/files/1/0429/6137/1290/files/58239342928.pdf
    • https://cdn.shopify.com/s/files/1/0428/9835/8432/files/8011835234.pdf
    • https://cdn.shopify.com/s/files/1/0432/7571/4715/files/gedinijuw.pdf
    • https://cdn.shopify.com/s/files/1/0436/9815/9769/files/joxebuzovorapa.pdf
    • http://www.w3.org/1999/02/22-rdf-syntax-ns#
    • http://purl.org/dc/elements/1.1/
    • http://ns.adobe.com/pdf/1.3/
    • http://ns.adobe.com/xap/1.0/
    • http://ns.adobe.com/xap/1.0/mm/
    • http://ns.adobe.com/xap/1.0/rights/

Extracted artifacts 3

Files carved from inside the sample during analysis.

FilenameKindSourceSize
font_00_sfnt_off0000a2d9.bin
37209bbf07d0fb28c9c5b9a596474edd052b2a62cc0ae037a2f6d078bc4a25fb
pdf-font-stream PDF embedded font (sfnt) at offset 0xA2D9 5444 bytes
font_01_sfnt_off0000b563.bin
1d8e5215edcaacdb013fbb5fec3d9f9c66c9fd6ec6260d96ddfd5fe72b8943e2
pdf-font-stream PDF embedded font (sfnt) at offset 0xB563 10732 bytes
font_02_sfnt_off0000d9b9.bin
ff5f0ef16caf3e97cd1984b3a03ea88e11eab8cf63d2ee006085a4b9995833f3
pdf-font-stream PDF embedded font (sfnt) at offset 0xD9B9 4324 bytes